function getRelativeOffset()

in src/components/draggable.js [139:146]


function getRelativeOffset(el) {
  const rect = el.getBoundingClientRect()
  const ownerRect = getOwner(el).getBoundingClientRect()
  return {
    x: rect.x - ownerRect.x,
    y: rect.y - ownerRect.y
  }
}